package com.common;

import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

import javax.imageio.ImageIO;
import javax.swing.ImageIcon;

public class WaterMark {
	// 水印透明度 
	private static float alpha = 0.5f;
	// 水印横向位置
	private static int positionWidth = 350;
	// 水印纵向位置
	private static int positionHeight = 400;
	// 水印文字字体
	private static Font font = new Font("宋体", Font.BOLD, 20);
	// 水印文字颜色
	private static Color color = Color.red;

	/**
	 * 
	 * @param alpha 
	 *          水印透明度
	 * @param positionWidth 
	 *          水印横向位置
	 * @param positionHeight 
	 *          水印纵向位置
	 * @param font 
	 *          水印文字字体
	 * @param color 
	 *          水印文字颜色
	 */
	public static void setImageMarkOptions(float alpha , int positionWidth , int positionHeight ,Font font,Color color){
		if(alpha!=0.0f) WaterMark.alpha = alpha;
		if(positionWidth!=0) WaterMark.positionWidth = positionWidth;
		if(positionHeight!=0) WaterMark.positionHeight = positionHeight;
		if(font!=null) WaterMark.font = font;
		if(color!=null) WaterMark.color = color;
	}

	/**
	 * 给图片添加水印图片
	 * 
	 * @param iconPath
	 *            水印图片路径
	 * @param srcImgPath
	 *            源图片路径
	 * @param targerPath
	 *            目标图片路径
	 */
	public static void markImageByIcon(String iconPath, String srcImgPath,
			String targerPath) {
		markImageByIcon(iconPath, srcImgPath, targerPath, null);
	}

	/**
	 * 给图片添加水印图片、可设置水印图片旋转角度
	 * 
	 * @param iconPath
	 *            水印图片路径
	 * @param srcImgPath
	 *            源图片路径
	 * @param targerPath
	 *            目标图片路径
	 * @param degree
	 *            水印图片旋转角度
	 */
	public static void markImageByIcon(String iconPath, String srcImgPath,
			String targerPath, Integer degree) {
		OutputStream os = null;
		try {

			Image srcImg = ImageIO.read(new File(srcImgPath));

			int width = srcImg.getWidth(null);
			int height = srcImg.getHeight(null);
			BufferedImage buffImg = new BufferedImage(width,
					height, BufferedImage.TYPE_INT_RGB);

			// 1、得到画笔对象
			Graphics2D g = buffImg.createGraphics();

			// 2、设置对线段的锯齿状边缘处理
			//g.setRenderingHint(RenderingHints.KEY_INTERPOLATION,RenderingHints.VALUE_INTERPOLATION_BILINEAR);
			g.drawImage(srcImg, 0, 0,width,height, null);
			// 3、设置水印旋转
			if (null != degree) {
				g.rotate(Math.toRadians(degree),(double) buffImg.getWidth() / 2, (double) buffImg.getHeight() / 2);
			}

			// 4、水印图片的路径 水印图片一般为gif或者png的，这样可设置透明度
			ImageIcon imgIcon = new ImageIcon(iconPath);

			// 5、得到Image对象。
			Image img = imgIcon.getImage();

			g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,alpha));

			// 6、水印图片的位置
			for(int j=20;j<height;j=j+180) {
				for(int i=10;i<width;i=i+230) {
					g.drawImage(img, i, j, null);
				}
			}
			g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER));
			// 7、释放资源
			g.dispose();

			// 8、生成图片
			os = new FileOutputStream(targerPath);
			ImageIO.write(buffImg, "JPG", os);

			System.out.println("图片完成添加水印图片");

		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				if (null != os)
					os.close();
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}

	/**
	 * 给图片添加水印文字
	 * 
	 * @param logoText 
	 *          水印文字
	 * @param srcImgPath
	 *          源图片路径
	 * @param targerPath
	 *          目标图片路径
	 */
	public static void markImageByText(String logoText, String srcImgPath,
			String targerPath) {
		markImageByText(logoText, srcImgPath, targerPath, null);
	}

	/**
	 * 给图片添加水印文字、可设置水印文字的旋转角度
	 * 
	 * @param logoText
	 * @param srcImgPath
	 * @param targerPath
	 * @param degree
	 */
	public static void markImageByText(String logoText, String srcImgPath,
			String targerPath, Integer degree) {

		InputStream is = null;
		OutputStream os = null;
		try {
			// 1、源图片
			Image srcImg = ImageIO.read(new File(srcImgPath));
			int width = srcImg.getWidth(null);
			int height = srcImg.getHeight(null);
			BufferedImage buffImg = new BufferedImage(width,height, BufferedImage.TYPE_INT_RGB);

			// 2、得到画笔对象
			Graphics2D g = buffImg.createGraphics();
			// 3、设置对线段的锯齿状边缘处理
			//g.setRenderingHint(RenderingHints.KEY_INTERPOLATION,RenderingHints.VALUE_INTERPOLATION_BILINEAR);
			g.drawImage(srcImg.getScaledInstance(srcImg.getWidth(null), srcImg.getHeight(null), Image.SCALE_SMOOTH), 0, 0, null);
			// 4、设置水印旋转
			if (null != degree) {
				g.rotate(Math.toRadians(degree),(double) buffImg.getWidth() / 2, (double) buffImg.getHeight() / 2);
			}
			// 5、设置水印文字颜色
			g.setColor(color);
			// 6、设置水印文字Font
			g.setFont(font);
			// 7、设置水印文字透明度
			g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,alpha));
			// 8、第一参数->设置的内容，后面两个参数->文字在图片上的坐标位置(x,y)

			//g.drawString(logoText, 10, 100);
			//g.drawString(logoText, 1, 800);
			for(int j=10;j<height;j=j+100) {
				for(int i=10;i<width;i=i+150) {
					g.drawString(logoText, i, j);
				}
			}

			// 9、释放资源
			g.dispose();
			// 10、生成图片
			os = new FileOutputStream(targerPath);
			ImageIO.write(buffImg, "JPG", os);

			System.out.println("图片完成添加水印文字");

		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				if (null != is)
					is.close();
			} catch (Exception e) {
				e.printStackTrace();
			}
			try {
				if (null != os)
					os.close();
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}

	public static void main(String [] args){
		String srcImgPath = "d:/119.jpg";
		String logoText = "亲巧瘦瘦包";
		String iconPath = "d:/4.png";

		String targerTextPath = "d:/119_text.jpg";
		String targerTextPath2 = "d:/119_text_rotate.jpg";

		String targerIconPath = "d:/qie_icon.jpg";
		String targerIconPath2 = "d:/qie_icon_rotate.jpg";

		// 给图片添加水印文字  
		//markImageByText(logoText, srcImgPath, targerTextPath);

		// 给图片添加水印文字,水印文字旋转-45  
		//markImageByText(logoText, srcImgPath, targerTextPath2, -45);

		setImageMarkOptions(0.3f,1,1,null,null);
		// 给图片添加水印图片  
		markImageByIcon(iconPath, srcImgPath, targerIconPath);  
		// 给图片添加水印图片,水印图片旋转-45  
		//markImageByIcon(iconPath, srcImgPath, targerIconPath2, -45); 
	}
}